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You've Got Trouble

This brain teaser spells trouble.
Each letter in the word "trouble" stands for 1, 3, 4, 5, 6, 8, 9
Clues:
T + T = R
O + O = UR
T  x T =  UL
O x O = RU
T + O = UB
T x O = BL

Question : What is the value of each letter?

See answer


Brain Teaser Of The Week